US PATENT SUBCLASS 75 / 743
.~.~.~.~ With leaching or dissolving

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
710  DF  .~.~ Below 300 degrees C {2}
711  DF  .~.~.~ Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) {11}
743.~.~.~.~ With leaching or dissolving {1}
744  DF  .~.~.~.~.~> Noble metal recovered as free metal

DEFINITION

Classification: 75/743

With leaching or dissolving:

(under subclass 711) Process wherein treatment of metalliferous material involves a leaching or dissolving operation at any stage in the production of free metal.